const createError = require('http-errors');
const express = require('express');
const path = require('path');
const cookieParser = require('cookie-parser');
const logger = require('morgan');
const UseRouter = require('./router/index');

var app = express();

// 设置跨域访问
// app.all('*', function (req, res, next) {
//   res.header('Access-Control-Allow-Origin', '*');
//   res.header('Access-Control-Allow-Headers', 'X-Requested-With');
//   res.header('Access-Control-Allow-Methods', 'PUT,POST,GET,DELETE,OPTIONS');
//   res.header('X-Powered-By', ' 3.2.1');
//   res.header('Content-Type', 'application/json;charset=utf-8');
//   next();
// });

// view engine setup
app.set('view engine', 'ejs');
app.set('views', path.join(__dirname, 'views'));

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

// router
UseRouter(app);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
